Improvement in steam-pumps



Y NORTH. Improvement in Steam No. 132 315.

-Pumps. Patented Oct. 15,1872.

m n E u r U Ll WW PATENT OFFICE.

JOHN NORTH, or NEwYoRK, N. .Y'.

-IMPROVEMENT IN STEAM-PUMPS.

Specification forming part of Letters Patent No. 132,315, dated October 15, 1872.

To all whom it may concern: I

Be it known that 1, JOHN NORTH, of 'the city, county, and State of New York, have invented a new and Improved Pump and Engine, of which the following is a specification:

Figure l is a vertical longitudinal section of my improved pump and engine. Figs. 2, 3, and 4 are vertical transverse sections of the same taken respectively on the lines 0 c, 70 k, and c k, Fig. l. v

Similar letters of reference indicate corresponding parts.

This invention relates to the combination of two invention-one an improvement in steamvalves, the other an improved pump--with each other, with the object of utilizing their advantages jointly, and thereby increasing their efl'ectiveness and utility.

The first of the above-mentioned inventions is fully described in an application for a patent filed by me in the month of May, 1872, and which was allowed in June, 1872. The other inventionthat in pumpsis described in a patent applicationwhichl have signed and executed on the 13th day of July, 1872, and filed on or about the twenty-first day of the same month.

My present invention consists in extending the stem of the rocking steam-valve toward the pump and in so connecting it with the stem projecting from the oscillating cylinder that is fitted into the pump-cylinder as to impart the necessary vibrating motion thereto. The action of the steam on the inlet-valve will thus also be brought to bear on the rocking turesj and I that lead to the chest through the circumference of the cylinder. E is the stem of the valve D extending through the end of the steam-chest and oscillated with and by the valve. F is the pump-cylinder and G its plunger, which is connected by the rod H with the piston B, to receive its motion directly from the same. I is the oscillating cylinder fitted into the cylinder F and embracing the plunger G, as shown. It has fourslots to communicate, alternately, with one each of the inlet and outlet ports, and operates in every respect substantially as described in my second above-named application. The projecting stem at of the cylinder I is, by toothed segments 12 and d, or by equivalent means, connected with the valve-stem E, as shown, so that the oscillations of the valve D and cylinder 1 will be simultaneous, as are the back and forward motions of the piston B and plunger G. The oscillations of B and I are, however, not necessarily equal in degree, as their relative motions can be easily varied by difference in sizes of the segments 1) d, or their equivalents.

This pumping mechanism has for its chief advantage its being absolute in effect and steady in operation. There is no dead-center to overcome, nor is any loss of power occasioned by any transmission of motion from the piston or plunger to the links or valves. Furthermore, an engine and pump of this kind can be made very strong and substantial and still operate with speed and promptness.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-- 'The oscillating stem E of the steam-valve D, when connected by toothed segments with the slotted cylinder I that embraces the pumpplunger, substantially as and for the purpose herein shown and described.

JOHN NORTH.

Witnesses (J. SE'DGWICK, T. B. MOSHER. 

